Hello Sir,
Congrats to you too for the quick response to feed T P group members of this
great achievement.
Muralidhar S.Iyer
Srinivasan MS <[EMAIL PROTECTED]> wrote:
India launches Chandrayaan-1 PTI
Chandrayaan-1, India's maiden lunar mission is seen soon after the launch
at the Satish Dhawan Space Center in Sriharikota, on Wednesday
SRIHARIKOTA (AP): India today became the sixth nation to launch a moon
mission when indigenously built PSLV-C11 rocket blasted off from the spaceport
here carrying with it Chandrayaan-I, which will map the lunar surface.
Indian Space Research Organisation's (ISRO) home-grown rocket PSLV-C11 lifted
off at 6.22 am from the Satish Dhawan Space Centre taking the spacecraft beyond
the thick dark cloud cover over this coastal town.
After 18.2 minutes, ISRO's warhorse rocket had injected Chandrayaan-I, its
maiden moon mission, in the earth orbit. With the launch, India joined the
elite club of moon faring nations -- the US, Russia, European Space Agency,
China and Japan.
"The launch was perfect and precise. The satellite has been placed in the
earth orbit. With this, we have completed the first leg of the mission and it
will take 15 days to reach the lunar orbit," ISRO Chairman G Madhavan Nair
said.
President Pratibha Patil, Prime Minister Manmohan Singh and Leader of the
Opposition L K Advani congratulated space scientists on the successful launch.
Chandrayaan-I is carrying an Indian flag, which will be placed on the lunar
surface when the Moon Impactor Probe lands on the moon during the course of the
two-year mission.
"Our baby is on the way to the moon," Chandrayaan-I spacecraft director
Mylswamy Annadurai said after the satellite was injected in the Transfer Orbit
with a a perigee of about 250 km and apogee of about 23,000 km, about 19
minutes.
About 18 minutes after liftoff, Chandrayaan-I separated from the rocket and
began circling the earth in an elliptical orbit powered by its own engines.
At opportune moments, space scientists tracking the mission will fire the
spacecraft's Liquid Apogee Motors (LAM) repeatedly to take it into more
elliptical orbits.
Subsequently, the LAM would be again fired to take the spacecraft till it
reaches 387,000 km from earth, which is called the Lunar Transfer Orbit (LTO).
After Chandrayaan-1 reaches the LTO, its LAM would be fired again so as to
slow down the spacecraft sufficiently to enable the gravity of the moon to
capture it into an elliptical orbit.
The next step would be to reduce the height of the spacecraft orbit around
the moon in various steps.
After some more procedures, Chandrayaan-1's orbit would be finally lowered to
its intended 100 km height from the lunar surface, which is expected to take
place around November 8.
Later, the Moon Impact Probe would be ejected from Chandrayaan-1 in a chosen
area following which the cameras and other payloads would be turned on and
thoroughly tested, marking the operational phase of the mission.
The MIP will not survive the fall but demonstrate technologies for a future
soft-landing mission.
During its crash on the lunar surface, the MIP will send high resolution
images of the moon and also analyse terrain.
Of the 11 instruments carried by the satellite, five are Indian, three are
from the European Space Agency, two from the US -- including a radar that can
search for ice under lunar poles -- and one from Bulgaria.
Beyond 3-D mapping the moon and scanning for mineral deposits, the mission
will test systems for a future moon landing. PTI
Following are the missions to moon in the last two decades
HITEN -- A project of the Japanese Space Agency was launched from the
Uchinaoura Space Center in Japan on January 24, 1990.
CLEMENTINE -- A joint project between the Strategic Defence Initiative
Organisation and NASA, was launched from Vandenberg AFB aboard a Titan IIG
rocket on January 25, 1994.
ASIASAT 3/HGS-1 -- A project funded by Asia Satellite Telecommunications co.
Ltd (the Peoples Republic of China) and Pan American Satellite (United States)
was launched from Tyuratam in Kazakhstan on Dec 24, 1997.
LUNAR PROSPECTOR -- was launched from the Kennedy Space Centre on January 7,
1998.
SMART 1 -- was launched from Kourou in French Guiana on September 27, 2003.
KAGUYA -- was launched from Tanegashima in Japan on September 14, 2007.
CHANG'E 1 -- was launched from Xichang in China on October 24, 2007.
CHANDRAYAAN-I -- was launched from Sriharikota in India on October 22, 2008.
PTI
cnu.pne
M.S.Iyer
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